Tracking issue: Improvements in Docker Agent

[nrybowski]

This issue tracks the improvements that are expected from a future refactor of the Docker Agent base code.

Must Have

• create_container() and create_container_student() are quite similar. A common routine must be implemented.
• Arguments of create_container() and create_container_student() are quite numerous and extending them is quite error prone. They should be absracted in DataClasses.
• The communication system between the child containers and the parent grading container should leverage the Docker network stack .
• Improve error handling from the Docker API calls (see create_container() and create_container_student()).

Nice to have